|
|
"""Tests for debugging machinery.
|
|
|
"""
|
|
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
|
|
import bdb
|
|
|
import builtins
|
|
|
import os
|
|
|
import sys
|
|
|
import platform
|
|
|
|
|
|
from tempfile import NamedTemporaryFile
|
|
|
from textwrap import dedent
|
|
|
from unittest.mock import patch
|
|
|
|
|
|
from IPython.core import debugger
|
|
|
from IPython.testing import IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
from IPython.testing.decorators import skip_win32
|
|
|
import pytest
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Helper classes, from CPython's Pdb test suite
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class _FakeInput(object):
|
|
|
"""
|
|
|
A fake input stream for pdb's interactive debugger. Whenever a
|
|
|
line is read, print it (to simulate the user typing it), and then
|
|
|
return it. The set of lines to return is specified in the
|
|
|
constructor; they should not have trailing newlines.
|
|
|
"""
|
|
|
def __init__(self, lines):
|
|
|
self.lines = iter(lines)
|
|
|
|
|
|
def readline(self):
|
|
|
line = next(self.lines)
|
|
|
print(line)
|
|
|
return line+'\n'
|
|
|
|
|
|
class PdbTestInput(object):
|
|
|
"""Context manager that makes testing Pdb in doctests easier."""
|
|
|
|
|
|
def __init__(self, input):
|
|
|
self.input = input
|
|
|
|
|
|
def __enter__(self):
|
|
|
self.real_stdin = sys.stdin
|
|
|
sys.stdin = _FakeInput(self.input)
|
|
|
|
|
|
def __exit__(self, *exc):
|
|
|
sys.stdin = self.real_stdin
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Tests
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def test_ipdb_magics():
|
|
|
'''Test calling some IPython magics from ipdb.
|
|
|
|
|
|
First, set up some test functions and classes which we can inspect.
|
|
|
|
|
|
>>> class ExampleClass(object):
|
|
|
... """Docstring for ExampleClass."""
|
|
|
... def __init__(self):
|
|
|
... """Docstring for ExampleClass.__init__"""
|
|
|
... pass
|
|
|
... def __str__(self):
|
|
|
... return "ExampleClass()"
|
|
|
|
|
|
>>> def example_function(x, y, z="hello"):
|
|
|
... """Docstring for example_function."""
|
|
|
... pass
|
|
|
|
|
|
>>> old_trace = sys.gettrace()
|
|
|
|
|
|
Create a function which triggers ipdb.
|
|
|
|
|
|
>>> def trigger_ipdb():
|
|
|
... a = ExampleClass()
|
|
|
... debugger.Pdb().set_trace()
|
|
|
|
|
|
>>> with PdbTestInput([
|
|
|
... 'pdef example_function',
|
|
|
... 'pdoc ExampleClass',
|
|
|
... 'up',
|
|
|
... 'down',
|
|
|
... 'list',
|
|
|
... 'pinfo a',
|
|
|
... 'll',
|
|
|
... 'continue',
|
|
|
... ]):
|
|
|
... trigger_ipdb()
|
|
|
--Return--
|
|
|
None
|
|
|
> <doctest ...>(3)trigger_ipdb()
|
|
|
1 def trigger_ipdb():
|
|
|
2 a = ExampleClass()
|
|
|
----> 3 debugger.Pdb().set_trace()
|
|
|
<BLANKLINE>
|
|
|
ipdb> pdef example_function
|
|
|
example_function(x, y, z='hello')
|
|
|
ipdb> pdoc ExampleClass
|
|
|
Class docstring:
|
|
|
Docstring for ExampleClass.
|
|
|
Init docstring:
|
|
|
Docstring for ExampleClass.__init__
|
|
|
ipdb> up
|
|
|
> <doctest ...>(11)<module>()
|
|
|
7 'pinfo a',
|
|
|
8 'll',
|
|
|
9 'continue',
|
|
|
10 ]):
|
|
|
---> 11 trigger_ipdb()
|
|
|
<BLANKLINE>
|
|
|
ipdb> down
|
|
|
None
|
|
|
> <doctest ...>(3)trigger_ipdb()
|
|
|
1 def trigger_ipdb():
|
|
|
2 a = ExampleClass()
|
|
|
----> 3 debugger.Pdb().set_trace()
|
|
|
<BLANKLINE>
|
|
|
ipdb> list
|
|
|
1 def trigger_ipdb():
|
|
|
2 a = ExampleClass()
|
|
|
----> 3 debugger.Pdb().set_trace()
|
|
|
<BLANKLINE>
|
|
|
ipdb> pinfo a
|
|
|
Type: ExampleClass
|
|
|
String form: ExampleClass()
|
|
|
Namespace: Local...
|
|
|
Docstring: Docstring for ExampleClass.
|
|
|
Init docstring: Docstring for ExampleClass.__init__
|
|
|
ipdb> ll
|
|
|
1 def trigger_ipdb():
|
|
|
2 a = ExampleClass()
|
|
|
----> 3 debugger.Pdb().set_trace()
|
|
|
<BLANKLINE>
|
|
|
ipdb> continue
|
|
|
|
|
|
Restore previous trace function, e.g. for coverage.py
|
|
|
|
|
|
>>> sys.settrace(old_trace)
|
|
|
'''
|
|
|
|
|
|
def test_ipdb_magics2():
|
|
|
'''Test ipdb with a very short function.
|
|
|
|
|
|
>>> old_trace = sys.gettrace()
|
|
|
|
|
|
>>> def bar():
|
|
|
... pass
|
|
|
|
|
|
Run ipdb.
|
|
|
|
|
|
>>> with PdbTestInput([
|
|
|
... 'continue',
|
|
|
... ]):
|
|
|
... debugger.Pdb().runcall(bar)
|
|
|
> <doctest ...>(2)bar()
|
|
|
1 def bar():
|
|
|
----> 2 pass
|
|
|
<BLANKLINE>
|
|
|
ipdb> continue
|
|
|
|
|
|
Restore previous trace function, e.g. for coverage.py
|
|
|
|
|
|
>>> sys.settrace(old_trace)
|
|
|
'''
|
|
|
|
|
|
def can_quit():
|
|
|
'''Test that quit work in ipydb
|
|
|
|
|
|
>>> old_trace = sys.gettrace()
|
|
|
|
|
|
>>> def bar():
|
|
|
... pass
|
|
|
|
|
|
>>> with PdbTestInput([
|
|
|
... 'quit',
|
|
|
... ]):
|
|
|
... debugger.Pdb().runcall(bar)
|
|
|
> <doctest ...>(2)bar()
|
|
|
1 def bar():
|
|
|
----> 2 pass
|
|
|
<BLANKLINE>
|
|
|
ipdb> quit
|
|
|
|
|
|
Restore previous trace function, e.g. for coverage.py
|
|
|
|
|
|
>>> sys.settrace(old_trace)
|
|
|
'''
|
|
|
|
|
|
|
|
|
def can_exit():
|
|
|
'''Test that quit work in ipydb
|
|
|
|
|
|
>>> old_trace = sys.gettrace()
|
|
|
|
|
|
>>> def bar():
|
|
|
... pass
|
|
|
|
|
|
>>> with PdbTestInput([
|
|
|
... 'exit',
|
|
|
... ]):
|
|
|
... debugger.Pdb().runcall(bar)
|
|
|
> <doctest ...>(2)bar()
|
|
|
1 def bar():
|
|
|
----> 2 pass
|
|
|
<BLANKLINE>
|
|
|
ipdb> exit
|
|
|
|
|
|
Restore previous trace function, e.g. for coverage.py
|
|
|
|
|
|
>>> sys.settrace(old_trace)
|
|
|
'''
|
|
|
|
|
|
|
|
|
def test_interruptible_core_debugger():
|
|
|
"""The debugger can be interrupted.
|
|
|
|
|
|
The presumption is there is some mechanism that causes a KeyboardInterrupt
|
|
|
(this is implemented in ipykernel). We want to ensure the
|
|
|
KeyboardInterrupt cause debugging to cease.
|
|
|
"""
|
|
|
def raising_input(msg="", called=[0]):
|
|
|
called[0] += 1
|
|
|
assert called[0] == 1, "input() should only be called once!"
|
|
|
raise KeyboardInterrupt()
|
|
|
|
|
|
tracer_orig = sys.gettrace()
|
|
|
try:
|
|
|
with patch.object(builtins, "input", raising_input):
|
|
|
debugger.InterruptiblePdb().set_trace()
|
|
|
# The way this test will fail is by set_trace() never exiting,
|
|
|
# resulting in a timeout by the test runner. The alternative
|
|
|
# implementation would involve a subprocess, but that adds issues
|
|
|
# with interrupting subprocesses that are rather complex, so it's
|
|
|
# simpler just to do it this way.
|
|
|
finally:
|
|
|
# restore the original trace function
|
|
|
sys.settrace(tracer_orig)
|
|
|
|
|
|
|
|
|
@skip_win32
|
|
|
def test_xmode_skip():
|
|
|
"""that xmode skip frames
|
|
|
|
|
|
Not as a doctest as pytest does not run doctests.
|
|
|
"""
|
|
|
import pexpect
|
|
|
env = os.environ.copy()
|
|
|
env["IPY_TEST_SIMPLE_PROMPT"] = "1"
|
|
|
|
|
|
child = pexpect.spawn(
|
|
|
sys.executable, ["-m", "IPython", "--colors=nocolor"], env=env
|
|
|
)
|
|
|
child.timeout = 15 * IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
|
|
|
child.expect("IPython")
|
|
|
child.expect("\n")
|
|
|
child.expect_exact("In [1]")
|
|
|
|
|
|
block = dedent(
|
|
|
"""
|
|
|
def f():
|
|
|
__tracebackhide__ = True
|
|
|
g()
|
|
|
|
|
|
def g():
|
|
|
raise ValueError
|
|
|
|
|
|
f()
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
for line in block.splitlines():
|
|
|
child.sendline(line)
|
|
|
child.expect_exact(line)
|
|
|
child.expect_exact("skipping")
|
|
|
|
|
|
block = dedent(
|
|
|
"""
|
|
|
def f():
|
|
|
__tracebackhide__ = True
|
|
|
g()
|
|
|
|
|
|
def g():
|
|
|
from IPython.core.debugger import set_trace
|
|
|
set_trace()
|
|
|
|
|
|
f()
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
for line in block.splitlines():
|
|
|
child.sendline(line)
|
|
|
child.expect_exact(line)
|
|
|
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline("w")
|
|
|
child.expect("hidden")
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline("skip_hidden false")
|
|
|
child.sendline("w")
|
|
|
child.expect("__traceba")
|
|
|
child.expect("ipdb>")
|
|
|
|
|
|
child.close()
|
|
|
|
|
|
|
|
|
skip_decorators_blocks = (
|
|
|
"""
|
|
|
def helpers_helper():
|
|
|
pass # should not stop here except breakpoint
|
|
|
""",
|
|
|
"""
|
|
|
def helper_1():
|
|
|
helpers_helper() # should not stop here
|
|
|
""",
|
|
|
"""
|
|
|
def helper_2():
|
|
|
pass # should not stop here
|
|
|
""",
|
|
|
"""
|
|
|
def pdb_skipped_decorator2(function):
|
|
|
def wrapped_fn(*args, **kwargs):
|
|
|
__debuggerskip__ = True
|
|
|
helper_2()
|
|
|
__debuggerskip__ = False
|
|
|
result = function(*args, **kwargs)
|
|
|
__debuggerskip__ = True
|
|
|
helper_2()
|
|
|
return result
|
|
|
return wrapped_fn
|
|
|
""",
|
|
|
"""
|
|
|
def pdb_skipped_decorator(function):
|
|
|
def wrapped_fn(*args, **kwargs):
|
|
|
__debuggerskip__ = True
|
|
|
helper_1()
|
|
|
__debuggerskip__ = False
|
|
|
result = function(*args, **kwargs)
|
|
|
__debuggerskip__ = True
|
|
|
helper_2()
|
|
|
return result
|
|
|
return wrapped_fn
|
|
|
""",
|
|
|
"""
|
|
|
@pdb_skipped_decorator
|
|
|
@pdb_skipped_decorator2
|
|
|
def bar(x, y):
|
|
|
return x * y
|
|
|
""",
|
|
|
"""import IPython.terminal.debugger as ipdb""",
|
|
|
"""
|
|
|
def f():
|
|
|
ipdb.set_trace()
|
|
|
bar(3, 4)
|
|
|
""",
|
|
|
"""
|
|
|
f()
|
|
|
""",
|
|
|
)
|
|
|
|
|
|
|
|
|
def _decorator_skip_setup():
|
|
|
import pexpect
|
|
|
|
|
|
env = os.environ.copy()
|
|
|
env["IPY_TEST_SIMPLE_PROMPT"] = "1"
|
|
|
env["PROMPT_TOOLKIT_NO_CPR"] = "1"
|
|
|
|
|
|
child = pexpect.spawn(
|
|
|
sys.executable, ["-m", "IPython", "--colors=nocolor"], env=env
|
|
|
)
|
|
|
child.timeout = 15 * IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
|
|
|
child.expect("IPython")
|
|
|
child.expect("\n")
|
|
|
|
|
|
child.timeout = 5 * IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
child.str_last_chars = 500
|
|
|
|
|
|
dedented_blocks = [dedent(b).strip() for b in skip_decorators_blocks]
|
|
|
in_prompt_number = 1
|
|
|
for cblock in dedented_blocks:
|
|
|
child.expect_exact(f"In [{in_prompt_number}]:")
|
|
|
in_prompt_number += 1
|
|
|
for line in cblock.splitlines():
|
|
|
child.sendline(line)
|
|
|
child.expect_exact(line)
|
|
|
child.sendline("")
|
|
|
return child
|
|
|
|
|
|
|
|
|
@pytest.mark.skip(reason="recently fail for unknown reason on CI")
|
|
|
@skip_win32
|
|
|
def test_decorator_skip():
|
|
|
"""test that decorator frames can be skipped."""
|
|
|
|
|
|
child = _decorator_skip_setup()
|
|
|
|
|
|
child.expect_exact("ipython-input-8")
|
|
|
child.expect_exact("3 bar(3, 4)")
|
|
|
child.expect("ipdb>")
|
|
|
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline("step")
|
|
|
child.expect_exact("step")
|
|
|
child.expect_exact("--Call--")
|
|
|
child.expect_exact("ipython-input-6")
|
|
|
|
|
|
child.expect_exact("1 @pdb_skipped_decorator")
|
|
|
|
|
|
child.sendline("s")
|
|
|
child.expect_exact("return x * y")
|
|
|
|
|
|
child.close()
|
|
|
|
|
|
|
|
|
@pytest.mark.skip(reason="recently fail for unknown reason on CI")
|
|
|
@pytest.mark.skipif(platform.python_implementation() == "PyPy", reason="issues on PyPy")
|
|
|
@skip_win32
|
|
|
def test_decorator_skip_disabled():
|
|
|
"""test that decorator frame skipping can be disabled"""
|
|
|
|
|
|
child = _decorator_skip_setup()
|
|
|
|
|
|
child.expect_exact("3 bar(3, 4)")
|
|
|
|
|
|
for input_, expected in [
|
|
|
("skip_predicates debuggerskip False", ""),
|
|
|
("skip_predicates", "debuggerskip : False"),
|
|
|
("step", "---> 2 def wrapped_fn"),
|
|
|
("step", "----> 3 __debuggerskip__"),
|
|
|
("step", "----> 4 helper_1()"),
|
|
|
("step", "---> 1 def helper_1():"),
|
|
|
("next", "----> 2 helpers_helper()"),
|
|
|
("next", "--Return--"),
|
|
|
("next", "----> 5 __debuggerskip__ = False"),
|
|
|
]:
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline(input_)
|
|
|
child.expect_exact(input_)
|
|
|
child.expect_exact(expected)
|
|
|
|
|
|
child.close()
|
|
|
|
|
|
|
|
|
@pytest.mark.skipif(platform.python_implementation() == "PyPy", reason="issues on PyPy")
|
|
|
@skip_win32
|
|
|
def test_decorator_skip_with_breakpoint():
|
|
|
"""test that decorator frame skipping can be disabled"""
|
|
|
|
|
|
import pexpect
|
|
|
|
|
|
env = os.environ.copy()
|
|
|
env["IPY_TEST_SIMPLE_PROMPT"] = "1"
|
|
|
env["PROMPT_TOOLKIT_NO_CPR"] = "1"
|
|
|
|
|
|
child = pexpect.spawn(
|
|
|
sys.executable, ["-m", "IPython", "--colors=nocolor"], env=env
|
|
|
)
|
|
|
child.timeout = 15 * IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
child.str_last_chars = 500
|
|
|
|
|
|
child.expect("IPython")
|
|
|
child.expect("\n")
|
|
|
|
|
|
child.timeout = 5 * IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
|
|
|
### we need a filename, so we need to exec the full block with a filename
|
|
|
with NamedTemporaryFile(suffix=".py", dir=".", delete=True) as tf:
|
|
|
|
|
|
name = tf.name[:-3].split("/")[-1]
|
|
|
tf.write("\n".join([dedent(x) for x in skip_decorators_blocks[:-1]]).encode())
|
|
|
tf.flush()
|
|
|
codeblock = f"from {name} import f"
|
|
|
|
|
|
dedented_blocks = [
|
|
|
codeblock,
|
|
|
"f()",
|
|
|
]
|
|
|
|
|
|
in_prompt_number = 1
|
|
|
for cblock in dedented_blocks:
|
|
|
child.expect_exact(f"In [{in_prompt_number}]:")
|
|
|
in_prompt_number += 1
|
|
|
for line in cblock.splitlines():
|
|
|
child.sendline(line)
|
|
|
child.expect_exact(line)
|
|
|
child.sendline("")
|
|
|
|
|
|
# as the filename does not exists, we'll rely on the filename prompt
|
|
|
child.expect_exact("47 bar(3, 4)")
|
|
|
|
|
|
for input_, expected in [
|
|
|
(f"b {name}.py:3", ""),
|
|
|
("step", "1---> 3 pass # should not stop here except"),
|
|
|
("step", "---> 38 @pdb_skipped_decorator"),
|
|
|
("continue", ""),
|
|
|
]:
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline(input_)
|
|
|
child.expect_exact(input_)
|
|
|
child.expect_exact(expected)
|
|
|
|
|
|
child.close()
|
|
|
|
|
|
|
|
|
@skip_win32
|
|
|
def test_where_erase_value():
|
|
|
"""Test that `where` does not access f_locals and erase values."""
|
|
|
import pexpect
|
|
|
|
|
|
env = os.environ.copy()
|
|
|
env["IPY_TEST_SIMPLE_PROMPT"] = "1"
|
|
|
|
|
|
child = pexpect.spawn(
|
|
|
sys.executable, ["-m", "IPython", "--colors=nocolor"], env=env
|
|
|
)
|
|
|
child.timeout = 15 * IPYTHON_TESTING_TIMEOUT_SCALE
|
|
|
|
|
|
child.expect("IPython")
|
|
|
child.expect("\n")
|
|
|
child.expect_exact("In [1]")
|
|
|
|
|
|
block = dedent(
|
|
|
"""
|
|
|
def simple_f():
|
|
|
myvar = 1
|
|
|
print(myvar)
|
|
|
1/0
|
|
|
print(myvar)
|
|
|
simple_f() """
|
|
|
)
|
|
|
|
|
|
for line in block.splitlines():
|
|
|
child.sendline(line)
|
|
|
child.expect_exact(line)
|
|
|
child.expect_exact("ZeroDivisionError")
|
|
|
child.expect_exact("In [2]:")
|
|
|
|
|
|
child.sendline("%debug")
|
|
|
|
|
|
##
|
|
|
child.expect("ipdb>")
|
|
|
|
|
|
child.sendline("myvar")
|
|
|
child.expect("1")
|
|
|
|
|
|
##
|
|
|
child.expect("ipdb>")
|
|
|
|
|
|
child.sendline("myvar = 2")
|
|
|
|
|
|
##
|
|
|
child.expect_exact("ipdb>")
|
|
|
|
|
|
child.sendline("myvar")
|
|
|
|
|
|
child.expect_exact("2")
|
|
|
|
|
|
##
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline("where")
|
|
|
|
|
|
##
|
|
|
child.expect("ipdb>")
|
|
|
child.sendline("myvar")
|
|
|
|
|
|
child.expect_exact("2")
|
|
|
child.expect("ipdb>")
|
|
|
|
|
|
child.close()
|
|
|
|
